The main function is mental. To get her to stop thinking of sex as you trying to stick her with that thing that hurts her, to thinking about sex as something she needs and craves and wants on her own, without your poking and prodding and advances.

Any natural way you can get to that point, then choose that method. As long as you understand where you're trying to get there, you can work with your situation to do it in a natural way.

Let her make the advance.

Let her be in control.

Let her tell herself she needs it.

When you get to #3, the process is working. Guide her self-discovery, in this case.